Term
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Definition
| The amount of blood pumped out of the ventricle each minute is called: |
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Term
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Definition
| The amount or process of returning blood back to the heart is called: |
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Term
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Definition
| The parasympathetic system has this effect on stroke volume. |
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Term
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Definition
| The volume of blood pumped out of the ventricle per contraction is called: |
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Term
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Definition
| The number of cardiac cycles per minute is called: |
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Term
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Definition
| A sudden drop in blood volume would lead to a/an __ in heart rate. |
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Term
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Definition
| Cardiovascular control involving the sympathetic and parasympathetic systems is centered here |
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Term
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Definition
| The volume of blood in the ventricle at the end of the filling phase is called: |
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Term
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Definition
| The volume of blood in the ventricle at the end of the contraction phase is called: |
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Term
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Definition
| The local self-regulation of blood flow in different regions of the body is called |
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Term
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Definition
| Substances can move into or out of these capillary pores |
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Term
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Definition
| This smooth muscle cuff regulates blood flow into capillaries. |
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Term
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Definition
| Because of the difference between hydrostatic and osmotic pressure, this fluid movement will happen at the venule end of the capillary. |
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Term
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Definition
| Increases in lactic acid would stimulate the arterioles to ______. |
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Term
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Definition
| Excess fluid and proteins in the interstitial fluid will be picked up by these vessels. |
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Term
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Definition
| Excess fluid and proteins in the interstitial fluid will be picked up by these vessels. |
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Term
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Definition
| An increase in the mean arterial pressure in arterioles will cause them to ____ in order to maintain the hydrostatic pressure of the blood entering capillary beds |
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Term
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Definition
| When extracellular calcium enters the cell, it stimulates the release of this ion from the sarcoplasmic reticulum |
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Term
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Definition
| Depolarization signals (ions) spread from myocardial cell to myocardial cell through these proteins structures located in the intercalated disks |
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Term
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Definition
| As these enter myocardial contractile cells through gap junctions, threshold is reached causing voltage gated channels to open |
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Term
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Definition
| Just like in neurons and skeletal muscle cells, efflux of this ion is responsible for repolarization of myocardial cells |
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Term
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Definition
| Channels for this ion are first to open during a contractile cell’s action potential. |
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Term
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Definition
| These myocardial cells are mostly fluid-filled and are designed for generating and quickly spreading electrical signals |
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Term
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Definition
| The rapid depolarization of autorhythmic cells is due to the influx of this ion. |
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Term
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Definition
| This section of the ECG represents the depolarization of the ventricles. |
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Term
| intrinsic conduction system |
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Definition
| Also called the electrical conduction system, this system is responsible for generating and spreading the action potential throughout the heart |
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Term
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Definition
| Note that myocardial ___ must occur before myocardial contraction. |
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Term
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Definition
| This section of the electrocardiogram coincides with atrial depolarization. |
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Term
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Definition
| This section of the electrocardiogram represents the repolarization of the ventricles. |
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Term
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Definition
| The electrical impulse is temporarily delayed at this step of the conduction system in order to allow the atria to complete the contraction |
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Term
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Definition
| These structures direct the electrical impulse from the apex of the heart up through the walls of the ventricles |
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Term
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Definition
| This segment of the ECG will be wider than normal if there is left bundle branch block. (You’ll need to do the end-of-module quiz to find this one). |
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Term
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Definition
| The depolarization of the heart begins at this cluster of cells located in the upper part of the right atrium. |
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Term
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Definition
| During this phase of the heart cycle, the pressure begins to increase, closing the AV valves. |
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Term
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Definition
| An increase in pressure in the ventricles causes these valves to open |
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Term
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Definition
| The relaxation phase of the heart cycle is called: (general term) |
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Term
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Definition
| As left ventricular pressure increases, left ventricular blood volume (increase/decreases). (Study graphs shown in this section) |
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Term
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Definition
| During this process, blood moves though the semilunar valves and out of the heart. |
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Term
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Definition
| The contraction phase of the heart cycle is called: (general term) |
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